Rail-fastening.



P. NAUMANN. RAIL FASTENING. APPLICATION FILED JULY 23, 1914.

Patented Ma1123, 1915.

2 SHEETS-SHEET 1.

'P. 'NAUMjANN.'

RAILTASTENING. APPLICATION FILED JULY 23, 1914. I

2 SHEETS-SEEET 2.

Patented Mar. 23,

C. D. m c m m A W. O. H T. m

THE mmkls PETERS 00.. PHD

PAUL NAUMANN, OF DRESDEN, GERMANY, ASSIGNOR TO OTTO & SGHLOSSER, OF MEISSEN, GERMANY.

RAIL-FASTENING.

Specification of Letters Patent.

Patented Mar. 23, 1915.

Application filed July 23, 1914. Serial No. 852,599.

To all whom it may concern.

Be it known that I, PAUL NAUMANN, a

citizen of the Kingdom of Saxony, German Empire, residing in Dresden-A, in the Kingdom of Saxony, in said Empire, have invented certain new and useful Improvements in Rail-Fastenings, of which the following is a specification.

The method of securing rails on twoshouldersole plates by means of clamping members driven between the base of the rail and the shoulder is already known. It is also known to vary the width of the gage of the rail on the sole plate by exchanging the clamping member for others of different widths.

The novel feature of the present invention consists in the clamping members being guided by webs on their underside in grooves in the sole of the plate in such a manner, that the clamping members will be held even if the base of the rail is not engaged in the recess of the shoulder. The clamping members are then held to the twoshoulder sole plate independently of the rail. Even if there is no rail, they will be held in such a manner that they may be driven out axially to the rail but cannot be tilted off upward nor be levered out. This arrangement has the advantage, that the efliciency of the rail fastening will not be affected by the wear between the base of the rail and the clamping member. When the secure hold of the clamping members depend merely on their grip between the base of the rail and the shoulder, these clamping members must necessarily become slack when a play appears at this point. This is obviated by the present invention. 1

In the accompanying drawings Figure 1 represents a transverse vertical section of one embodiment of this invention. Fig. 2 represents a similar view in which the clamping members are broader, adapting the device to a track of narrower gage. Fig. 8 represents a transverse section in which the clamping members are still broader and adapt the fastener to a track of broader gage than those of Figs. 1 and 2. Fig. 4 represents a plan view of one of said embodiments. F ig. 5 is a section on line 5-5 of Fig. 1. Fig. 6is an enlarged horizontal section on line 66 of Fig. 1, showing the rounded portions of the clamping opposite ends,

member somewhat exaggerated for purpose of illustration. v The soleplate 1 has undercut lugs 2 at its sald ends, preferably underneath theinner vertical faces 20 of said undercut lugs and a plain'bearing surface 10 between said transtransverse grooves, 7 near verse grooves adapted to receive the base of P the rall 3. The lugs 2 are spaced apart a distance considerably in excess of the width of the base of the rail and said grooves are at a greater distance from each other than the width of the rail base. Two clamping members a are interposed between said lugs 2 and the opposite edges of the rail base without contact with the latter. These clamping members are provided on their undersides with ribs 6 and on their upper sides with flanged heads 5.

flanged heads 5 has a vertical 50 which engages the vertical face 20 of one ofthe lugs 2, and an overhanging ledge 51 which engages the upper face of the base of the rail near the outer edge thereof and a lip 52 which projects over'the lug 2. Each of these clamping members 4 is slightly curved or rounded upward at 4 and the rib- 6 thereof is curved or 6"and has a wedging action in connection with the lug 2 and the adjacent transverse groove 7,'whereby the member is wedged berounded laterally at Each ofthe bearing face tween the overhanging undercut'lug .2 and 7 and held thereby The bodies 40f the clamping members are of different width as indicated by I. II and III and the ribs 6. on these several forms of clamping members are located at the'same distance from the outer edges thereof but at difierent distances from their inner edges. Ejuch construction renders the clamping members interchangeable in such manner as to permit a change of gage of the railway with the use of the same soleplates and in some instances with the same clamping members. For instance a narrow clamping member I may be used at the left hand end of the soleplate 1 and a wide clamping member III at the right hand end of said soleplate as shown in Fig. 1 whereby, the rail 3 at one side of the track is thrown toward the left; or said clamping member'sm'ay' be reversed, the plate 111 being placed. at the left and the plate I at the right as shown in Fig. 3, whereby the rail 3 is shifted to its farthest right hand adjustment; or two clamping members 11 and H of similar widths may be disposed at opposite ends of the soleplate, as shown in Fig. 2, in which case the rail 3 is in position intermediately between the positions shown in Fig. 1 and Fig. 3. These adjustments applied to both rails of the track render this rail fastening adaptable to tracks of widely varying gage.

Preferably the clamping members are made, as seen in Fig. l, of a shape corresponding to the side of the rail base, over which only the lugs 5 of the clamping members engage in the middle of the sole plate which coincides with the center of the tie. As evident from Figs. 4 and 5 also the middle part of the web may be omitted. Then the two remaining ends are preferably curved in a manner corresponding to the hereinbefore mentioned curvature of the whole web. The lug 5 is provided with an outer lip 52 which projects over the undercut h1g2.

As further evident from Figs. 4 and 5, the web 6 is extended beyond the ends of the clamping members f in form of ears 8, which are bent upward, after the clamping members have been driven into their seat, and engage in front of the ends of the lug 2, thereby securing the clamping member on its seat.

I claim:

1. A. rail fastening comprising a soleplate having upwardly and inwardly projecting undercut lugs at its opposite ends, transverse grooves in its body below said undercut lugs, and a plain bearing surface between said lugs broader thancthe base of the rail, clamping members provided with ribs on their under faces engaging said grooves, said clamping members having a wedging action independent of the rail between said undercut lugs and said grooves and being provided with heads having ing over the base of the rail.

2. A rail fastening comprising having upwardly and inwardly projecting undercut lugs at its opposite ends, transverse Sonics of this patent may be obtained for ledges projecta soleplate five cents each, by addressing the grooves in its bodyb'elcwsai'd undercut lugs, and a plain bearing surface between said lugs broader than the base of the rail, said undercut lugs having inner vertical faces, clamping members having vertical faces engaging the vertical faces of said undercut lugs and ribs on their under sides adapted to engage said grooves, said clamping members having a wedging action independent of the rail between said vertical faces and said grooves and being provided with heads having ledges projecting over the base of the rail.

3. A rail fastening comprising a soleplate having upwardly and inwardly projecting undercut lugs at its opposite ends, transverse grooves in its body below said undercut lugs, and a plain bearing surface between said lugs broader than the base of the rail, said undercut lugs having inner vertical faces, clamping members having vertical faces engaging the vertical faces of said undercut lugs and ribs on their under sides adapted to engage said grooves, said clamping members having a wedging action independent of the rail between said vertical faces and said grooves and being provided with heads having ledges projecting over the base of the rail and lips projecting over said undercut lugs.

4:. A rail fastening comprising a soleplate iaving upwardly and inwardly projecting undercut lugs at its opposite ends, transverse grooves in its body below said undercut lugs, and a plain bearing surface between said lugs broader than the base of the rail, interchangeable clamping members of different widths provided with ribs on their under faces at different distances from their inner edges and engaging said grooves, said clamping members having a wedging action independent of the rail between said undercut lugs and said grooves and being provided with heads having ledges projecting over the base of the rail.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

PAUL NAUMANN.

Witnesses:

/ Hmnmorr EBERLEIN,

/ LEO A. Bnnononz.

Commissioner of Patents,

Washington, D. C. 

